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vGYRUS B. WHITE, OF PORT RICHMOND, NEW YORK.

Letters Patent No. 80,376, dated July 28, 1868.

IMPROVEMENT IN GIB AND SELF-OILBR.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, CYRUS B. WHITE, of Port Richmond, in the county ofRichmond, and State of New York, have invented a new and improved Giband Self-Oiler; and I'do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin the art to make and use the same, reference being had to theaccompanying drawings, forming part of this specification. ,i

This invention relates to a. new and useful improvement inself-lubricating gibs for steam-engines, and is an improvement on adevice for that purpose, patented by William A. Devon, November 19,1867.

The object of the invention is to avoid the waste of oil caused by themotion of the cross-head, and, while etlecting this end, to obtain aperfect or reliable bearing,- at all times, of thefriction-rolleragainst the guide.

In the accompanying sheet of drawings- Figure lis a front View of myinvention.

Figure 2, a side sectional view of the same.

Figure 3, a front view of' the same, thefriction-plate being removed.

Figure 4, a detachable view of the frietiomroller.

Similar letters of reference indicate corresponding parts.

The gib, as in the original patent of Devon, is composed of two parts; Aand B, the former, A, being the main portion, and the latter, B, afriction-plate, made of brass, the plate B being provided at each sidewith two plates or slides, a a, which w-ork in-grooves in the sides oredges of thopart A, and retain the friction-plate in place. v

On the upper end of the part A. there is an oil-cup, C, provided with adoor or flap, b, at its upper. end. This oil-cup is divided into twocompartments, c d, by a partition-plate', e, which may be fixed or castwith the cup, or made separately from it, and arranged to slide in andout. The compartment c is the oil-chamber, and is supplied with oilthrough the door or Hap b,y as will be understood by referring to fig.2. Y

D represents a friction-roller, .the periphery of which is made concave,as shown clearly in fig. 4. This roller has its bearings in slides ff,which are fitted in grooves g g, 'made in the inner` surfaces of thesides of the compartment d, said slides being connected by a cross-bar,7L. These slides are allowed tewerk or move` freely in the grooves g g,and a. spring, z, which is attached to the partition-plate e, bearsagainst the cross-bar t of the slidesff, nnd'has a tendency to keep theroller D in contact with the slide o r guide against which thecross-head works, a hole or slot being made in plate for the roller D topass through.

E represents a wick, one end olf which is attached to the bottom ofthecompartment d, and extends over a rod, j, in the upper .part of el, andthence through a slot, lain the partition-plate c, and extends down-intothe compartment c, below the surface of the oil therein. The wick E is.kept in contact with the inner side of theroller D, and by capillaryattraction supplies the roller D with a suiiiciency of oil to insureproper lubrication, the groove in the periphery of roller D serving asan oil-chamber. Y

`In the working ofthe cross-head, no oil can escape from the compartmentc, and as no oil is allowed in (Z, of course none can escape around theroller D, through the openings in A and B, through which the rollerworks. This is the great dihculty attending the original invention'ofDevon. The cup C has no partition-` plate, e, the oil beingunderneaththe roller D, and escaping in greater or less quantities around theroller, and 5. also through slots in the sides ofthe cup C, which slotsextend entirely through the sides of the cup, in'whicl'iV slots theslides of the roller work. V

Besides this diliiculty of the escape and waste of oil, the slots inthesides of the cup frequently become choked up with einders, ice,`andfilth, leaving no play for the roller D. These contingencies are fullyohviated by my improvement, as the'slides ff work in grooves in theinner surfaces of the compartment d, and cannot become obstructed oriilled with cinders ice or filth and the oil bein" confined in the comart-mente none a i a c, Y P s being riear the roller, or allowed tocome'in contact with the same, except what is supplied toit b vwick.E,`no oil can escape or be wasted by the reciprocating movement ofthe cross-head and gib.

I do not claim the frietion-p1ate B, roller D, and supply-wick E, forthey have been previously used, and are now used in the Devon patent. 4

Having described my invention, what I claim as new, and desire to secureby Letters Patent, s

1 The partition-plete e in the cup C, for the purpose of separating theoii'from the roller D, and preventing the former being discharged fromthe cup under therreeiproating motion of the cross-head and gib.

2. In combination with the above, I claim the roller-slidefh, arrangedin grooves g, in'the'sides of the compartment el, substantially asdescribed, and fertile purpose set forth.Y A

3. The combination of the roller D, wick E, and the/cup C, divided intotwo compartments by the'partition plete e, substantially as and for thepurpose specified.

CYRUS B. `WHITE.

Witnesses:

WM. F. MeNIMARA, J. M. COVINGTON.

